C11111211113313112113313331333133313221333133313332112323223313231   >>    C1111121111331311211331333133313331322133313331333211232322331323   <<    C11111211113313112113313331333133313221333133313332112323223313233   >>      C11111211113313112113313331333133313221333133313332112323223313232   >>